W9576-11Y

Potato

Variety Description

Variety used for comparison: 'Agata'

Summary: The lightsprout of ‘W9576-11Y' has a medium number of root tips while that of ‘Agata' has many root tips. The base of the lightsprout of ‘W9576-11Y' is ovoid, has a very strong intensity of anthocyanin colouration and very sparse to sparse pubescence while that of ‘Agata' is broad cylindrical, has a very weak to weak intensity of anthocyanin colouration and dense pubescence. The apex of the lightsprout of ‘W9576-11Y' has a medium intensity of anthocyanin colouration and very sparse to sparse pubescence while that of ‘Agata' has a very weak to weak intensity of anthocyanin colouration and a medium density of pubescence. The leaf of ‘W9576-11Y' is large and has a free arrangement of leaflets while that of ‘Agata' is small and has a touching arrangement of leaflets.

Description:

LIGHTSPROUT: small to medium size, medium number of root tips, short lateral shoots
LIGHTSPROUT BASE: ovoid, very strong intensity of anthocyanin colouration, medium proportion of blue in anthocyanin colouration, very sparse to sparse pubescence
LIGHTSPROUT APEX: very small to small in relation to base, closed habit, medium intensity of anthocyanin colouration, very sparse to sparse pubescence

PLANT: foliage structure is leaf type where foliage is closed and stems are not or hardly visible, semi-upright growth habit, absent or very few inflorescences, matures very early to early season

STEM: absent or very low extent of anthocyanin colouration

LEAF: large, free arrangement of leaflets, few to medium number of secondary leaflets, light to medium green upper side, absent or very weak intensity of anthocyanin colouration on upper side of midrib
SECOND PAIR OF LATERAL LEAFLETS: narrow width in relation to length
TERMINAL AND LATERAL LEAFLETS: absent or very low frequency of coalescence

TUBER: short-oval, light yellow flesh
TUBER EYE: shallow to medium depth, yellow at base
TUBER SKIN: light yellow brown, smooth texture

Origin & Breeding History: 'W9576-11Y' originated from the cross between ‘Dakota Pearl' as the female parent and 'Gala' as the male parent, conducted at the University of Wisconsin-Madison breeding station in Madison, Wisconsin, United States in 2007. One of the resulting progeny was designated ‘'W9576-11Y' in 2009 based on negative mass selection for agronomic characteristics and disease resistance.

Tests & Trials: The comparative trial for 'W9576-11Y' was conducted by Global Agri Services Inc. in Central Blissville, New Brunswick during the 2024 growing season. The field trial consisted of a single 14.86 metre long row per variety. Rows were spaced 1.1 metres apart with each row containing 65 plants spaced 0.23 metres apart. Measurements were taken from 10 plants, or 10 parts of plants, of each variety. Lightsprout characteristics were assessed on 10 tubers harvested from the comparative trial and observed approximately 2.5 to 3 months after sprouting was promoted by exposing the tubers to an external agent.

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Potato: ‘W9576-11Y' (left) with reference variety ‘Agata' (right)